Chrome Version: (copy from chrome://version)
OS: (e.g. Win10, MacOS 10.12, etc...)

What steps will reproduce the problem?
(1) Pin many items into overflow menu until newly pinned apps no longer fit in the overflow menu
(2) 
(3)

What is the expected result?

The overflow menu should be scrollable.

What happens instead?

It is not scrollable.



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If this is a regression (i.e., worked before), please consider using the
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For graphics-related bugs, please copy/paste the contents of the about:gpu
page at the end of this report.